very bad from Raymarine ! Interesting goatboating had a good experience though.
My experience - bought a new boat in 2012. Turns out the charts were 2010 so I asked them to upgrade to currentcharts. They refused and said I would have to pay for current charts. BAd customer service, then...radar didnt't work properly. Under warranty I had to have it removed, couriered to them and back and replaced all at my expense. All they did was fix it and they won;t tell you what the problem was. So, 200 euro later it works like it should. LAgoon/Benetau have stopped using them due to warranty/customer service issues and switched to Garmin. Apart from the customer service, the products work fine.

I have had excellent support from Simrad (Navico) in the US. You have to send them an email through their website, but an engineer gets back to you within a day, after which you are in direct contact with him/her through normal email. I have never tried phone support.

The initial email contact through the website is the only bad part of the support (I hate when companies do not provide a direct email).